In our POC for our new application , noticed the significant differences on the performance on two different environment which is running on same hardware model.Even though the network layer is different from the environment A and B the issue is when the data is copied locally .

Later we noticed when we change the EVC Mode from Intel Nehalem Generation to Intel Ivy Bridge a good performance improvement.

From the VMwareblog , it is mentioned that ” For most enterprise applications you can see there is no, or an almost immeasurable, performance impact when using EVC. But, there are certain corner cases, like encryption, that are crippled when instructions sets like AES-NI set are not available (Example: Oracle Transparent Data Encryption, OpenSSL)” so our data in POC is also encrypted and to make sure we setup the test VM and configured the Apache for the speed test with SSL on port 1000.

As per the VMware Blog also they mentioned the test result and for encryption there is a huge different so when setting up the new cluster , we should understand the type of application and traffic type , based on that we have t select the cluster EVC mode.